Abstract: In current software systems，as the existing modeling system is only a single development system，the product of development tends to yield low productivity，low quality when the existing methods are used for feature modeling.The method of generating a feature model from business process model is presented by making use of increasing reusability of software product line.The method by making use of the algorithm of folding operation organizes a use-case group that has the highly related and similar functionality，explicitly shows commonality and variability in business processes，achieves software of the whole business processes，and improves the product of productivity and quality.